Toshiba MMY-MAP0724HT6UL, Руководство по обслуживанию

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13
„
Adding refrigerant
After finishing vacuuming, exchange the vacuum pump with a refrigerant canister and start additional charging of
refrigerant.
„
Calculation of additional refrigerant charge amount
Table 3
Table 4
Example:
(114 type)
Additional refrigerant charge
amount
(lb)
=
Actual length of liquid
pipe
×
Additional refrigerant charge
amount per liquid pipe 1ft
[Table 3]
+
Adjustment amount of
refrigerant
[Table 4]
Liquid pipe outer dia. Ø1/4 Ø3/8 Ø1/2 Ø5/8 Ø3/4
Additional refrigerant amount / 1 ft (lb) 0.017 0.037 0.071 0.108 0.168
Outdoor unit capacity type
Adjustment amount of refrigerant
(lb)
Combined outdoor units
072 type 3.31 072 type –
096 type 13.23 096 type –
114 type 15.43 114 type –
144 type 0.00 072 type 072 type
168 type 16.53 096 type 072 type
192 type 27.56 096 type 096 type
228 type 27.56 114 type 114 type
L1 Ø1/2: 30 ft L2 Ø1/2: 15 ft L3 Ø3/8: 10 ft
a Ø1/4: 10 ft b Ø3/8: 15 ft c Ø1/4: 10 ft d Ø1/4: 10 ft
Additional charge amount (lb)
=
(Lx
×
0.017 lb/ft) + (Ly
×
0.037 lb/ft) + (Lz X 0.071 lb/ft) + (15.43 lb)
=
((a+c+d)
×
0.017 lb)+((L3+b)
×
0.037 lb)+((L1+L2)
×
0.017 lb+(15.43 lb)
=
(30
×
0.017 lb) + (25
×
0.037 lb) + (45
×
0.071 lb) + (15.43 lb)
=
20.06 lb
Lx : Actual total length of liquid pipe Ø1/4 (ft)
Ly : Actual total length of liquid pipe Ø3/8 (ft)
Lz : Actual total length of liquid pipe Ø1/2 (ft)
L2
L3
a b c d
L1